Re^2: Regular Expressions: Removing 'only' single spaces from a string

what does the $1$2 mean? Doesn't the $ regular expression designate the end of the string?

Comment on Re^2: Regular Expressions: Removing 'only' single spaces from a string

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Re^3: Regular Expressions: Removing 'only' single spaces from a string by GrandFather (Saint) on Oct 20, 2005 at 23:31 UTC
In the regular expression, yes it does. In the replacement expression $n is the n'th capture string in the regular expression. So for `s/(x) (y)/$1$2)/` 'x y' gets replaced with 'xy' for example. Perl is Huffman encoded by design.	[reply] [d/l]